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/*
* anytun
*
* The secure anycast tunneling protocol (satp) defines a protocol used
* for communication between any combination of unicast and anycast
* tunnel endpoints. It has less protocol overhead than IPSec in Tunnel
* mode and allows tunneling of every ETHER TYPE protocol (e.g.
* ethernet, ip, arp ...). satp directly includes cryptography and
* message authentication based on the methodes used by SRTP. It is
* intended to deliver a generic, scaleable and secure solution for
* tunneling and relaying of packets of any protocol.
*
*
* Copyright (C) 2007-2009 Othmar Gsenger, Erwin Nindl,
* Christian Pointner <satp@wirdorange.org>
*
* This file is part of Anytun.
*
* Anytun is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* any later version.
*
* Anytun is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with anytun. If not, see <http://www.gnu.org/licenses/>.
*/
#include <map>
#include <iostream>
#include <boost/bind.hpp>
#include "signalController.h"
#include "log.h"
#include "anytunError.h"
#include "threadUtils.hpp"
SignalController* SignalController::inst = NULL;
Mutex SignalController::instMutex;
SignalController& gSignalController = SignalController::instance();
SignalController& SignalController::instance()
{
Lock lock(instMutex);
static instanceCleaner c;
if(!inst)
inst = new SignalController();
return *inst;
}
int SigErrorHandler(int /*sig*/, const std::string& msg)
{
AnytunError::throwErr() << msg;
return 0;
}
//use system specific signal handler
#ifndef _MSC_VER
#include "signalHandler.hpp"
#else
#ifdef WIN_SERVICE
#include "win32/signalServiceHandler.hpp"
#else
#include "win32/signalHandler.hpp"
#endif
#endif
void SignalController::init(DaemonService& service)
{
registerSignalHandler(*this, service);
handler[SIGERROR] = boost::bind(SigErrorHandler, _1, _2);
}
void SignalController::inject(int sig, const std::string& msg)
{
{
Lock lock(sigQueueMutex);
sigQueue.push(SigPair(sig, msg));
}
sigQueueSem.up();
}
int SignalController::run()
{
for(CallbackMap::iterator it = callbacks.begin(); it != callbacks.end(); ++it)
if(it->first == CALLB_RUNNING)
it->second();
int ret = 0;
while(1) {
sigQueueSem.down();
SigPair sig;
{
Lock lock(sigQueueMutex);
sig = sigQueue.front();
sigQueue.pop();
}
HandlerMap::iterator it = handler.find(sig.first);
if(it != handler.end())
{
ret = it->second(sig.first, sig.second);
if(ret)
break;
}
else {
it = handler.find(SIGUNKNOWN);
if(it != handler.end())
it->second(sig.first, sig.second);
else
cLog.msg(Log::PRIO_NOTICE) << "SIG " << sig.first << " caught with message '" << sig.second << "' - ignoring";
}
}
for(CallbackMap::iterator it = callbacks.begin(); it != callbacks.end(); ++it)
if(it->first == CALLB_STOPPING)
it->second();
return ret;
}
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